<script>

	function getUserName(id) {
		var xmlhttp;
		if (window.XMLHttpRequest)
		{	// code for IE7+, Firefox, Chrome, Opera, Safari
			xmlhttp=new XMLHttpRequest();
		} else {	// code for IE6, IE5
			xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
		
		xmlhttp.onreadystatechange = function() {
			if (xmlhttp.readyState==4 && xmlhttp.status==200)
			{
				var object = JSON.parse( xmlhttp.responseText );
				
				return object['id'];
			}
		}
		
		xmlhttp.open("GET","https://graph.facebook.com/"+id,true);
		xmlhttp.send();
	}

</script>